To oblige people often costs little and helps much.

Knowing how to keep a friend is more important than gaining a new one.

The heaven of the envied is hell for the envious. [...because they focus on what they don't have rather than being grateful for what they have, which is always better than some others.]

When a man's knowledge is deep, he speaks well of an enemy. Instead of seeking revenge, he extends unexpected generosity. He turns insult into humor, ... and astonishes his adversary who finds no reason not to trust him.

The greatest fool is he who thinks he is not one and all others are.

There are rules to luck, not everything is chance for the wise; luck can be helped by skill.

All men are idolators, some of fame, others of self-interest, most of pleasure.